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原文传递 Field Evaluation of Unlighted Overhead Guide Signs Using Older Drivers. Final rept.

题名：	Field Evaluation of Unlighted Overhead Guide Signs Using Older Drivers. Final rept.
作者：	Zwahlen-H.T.; Russ-A.; Vatan-Z.
关键词：	Field-tests; Aged-drivers; Night-driving; Overhead-signs.;Sign-visibility; Sign-legibility; Questionnaires-; Sign-materials; Sign-lighting; Sign-effectiveness; Recommendations-; Sign-reflectance.
摘要：	The aim of this study is to compare selected signing materials in certain combinations to determine if there is adequate conspicuity, legibility, and appearance to allow ODOT to erect overhead guide signs on freeways without lighting at night, and to provide a recommendation to ODOT based on the results. The material combinations compared are beaded Type III (3M High Intensity) legend on beaded Type III background, Type VIII (Avery-Dennison Series T-7000 MVP) legend on microprismatic Type III (Avery-Dennison High Intensity) background, Type IX (3M Diamond Grade VIP) legend on Type IX background, Type VII (3M Diamond Grade LDP) legend on beaded Type III background, Type IX legend on beaded type III background, and lighted beaded Type III legend on beaded Type III background as a control. The evaluation is made using older drivers (age at least 63) riding at night in a van.
报告类型：	科技报告